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      09-26-2018, 04:02 PM   #4
BMWDriverX
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Drives: G12 750i X-Drive
Join Date: Jul 2017
Location: CA

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All of these octane boosters will maybe bring 91oct to 93oct and 93oct to 95oct but at the same time they will foul your plugs and leave colored deposits on the plugs from MMT and other ingredients they use. You're better off throwing 4 gallons of E85 in.
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